Stave jointer



May 4 1926.

w. s. MINOR S'I'AVE JOINTER I filed August 2, 1924 Y e Sheets-Shet 1 gwuantoz May 4 1926;

. 4 1,583,066 w. s. MINOR n 1 s'mvs JOINTBR Filed August 2, 1924 5 s t -s t; 2

May 4,1926.

w, s. MINOR STAVE Jomrrm Filed A gust 2, 1924 e Shets-Sheet 4 v 5/ 33 5 a l 1 4 7 I 34) sun-comma Filed August 2, 1924 e Sheets-Sheet 5 w.- s. MINOR 'S'I'AVE JOIN'IER May 4' 1926.

Filed August 2, 1924 t e 6 NW w e v a m la A Q q k r .&

w. Ihnor Patented May 4, 1 926.

WA TERS. Mince,orounlvmennlyijTennessee;.

STAVE construe; i i

' Application filed August 2,1924, Serial No. 729,805.;

To (ZZZ whom it may concern: I

Be it known that I, annin S. :lVlINDR,

a citizen ofthe United States, residing at Cunningham, in the county of Montgomery and State of Tennessee, havezin-vented .cert'ain new and, useful Improvements in Stave Jointers, of which the following is a spec fication, reference being had to the accompanying drawings.

; ,This invention relates to automatic stave jointersforjointing barrel staves, and more iJ-une 12, 1-917. 1"

particularly to certain improvements in the I stave jointing machine illustrated and described in my Patent #1,229,3Q7, granted,

One-of the objects of the present invention is to provide improved means for supporting the jointing saws,wvhich saws are so mounted thatzboth the'saws are relatively movable toward or from eachother and both 1 saws are disposed in planes which converge and in this connection to provide saws which,

toward the center of ,motion' of the mandrel supporting; frames.

A further object is tofprovide'"improved means whereby both saws may be simultaneously shifted toward or from each other,

and provide in this connection automatic means whereby the distance between the saws may be gradually increased and then gradually decreased to form the bilge in the stave, thatiis to increase the width of the stave at the middle thereof, the sideedges of the stave always being-kept at the proper the'completedbarrel; 1 Ii i A still'further object is-to providea mechanism of this character which" isf-so con angle with relation to eachother toform structed that either wide "Or n-arrow staves may be jointed, the angle of the side-edges of the staves being automatically kept true,

are in radia-l'alignment with the hinge pins upon which the mandrel frames are sup-- ported. so that though the angle of, bevel in the staves' when jointed will be different for each andevery width, yet all will cente at the center of thecompleted cask. u g Another object is to provide. a: sliding feed table having a guide rail operatively connected thereto on one 'sideand having a straight edge indicator for the right hand" saw. Still another object is to provide means whereby the feed table has transverse move ment simultaneously with the leftihand saw and-whereby the straight edge has transverse the stave has been;fully-cut.

movement simultaneously right hand saw.

A furtheryobject is tor-providea r 7 tion of this kind' with; a template which controls the inward andoutw-ard movement of the" saws, that. is the" movement j'towardlkor 15, I

from each gother, whereby to give proper i curvature automatically; Ito the; side edges of the completed stave;

I A; till further :object-Iia to provide 7 auto mat c means forlongitudinally shifting the template-or reciprocatingfthe sam'elas soon 'as the board from which thestave-is*tobe cut is in position to bep'engagedi' byathe: saws and; to cause; the automatic disconnection of the template-from itsoperatin means: when Another object is: ,o providelin chine of this character acircular saw with just enoughof the saw projecting, above the stave restto cutthrough the staveto'thus prevent lmposing an undue strain uponthesawg i o Still another object is to providesa'stave jointer. in whichtheform of the joint on the finished stave is controlled by the form of camor template used,'-mak-ing it an easy matter'to change from one to janothenr a I Astlll further object is. to provide :means toward orffrom each other, the vfeeds.table with-its guide i and. straight edge 'opposedgtothe guide simultaneously adjusted toward each other by the .same' means, and 'provide' v means whereby the sawsmaybeyautomatie cally shifted towardi'or vfrom"(each '.other after having-been manually adjusted;

armed crank and a shaft upon-which; the

Another object is to provide means for shifting the saws.,w-hich includes .a-;'d'ouble crank is mounted, each arm being: connected to one of the pivoted sawsupporting members, the shaft being rotatively adjustable by hand whereby to shift the crank and; the

saws, and provide automaticoperating means V for shifting the saws toward or from: each other a predetermined amount" which in cludes an arm :loosely mount-ed-npon the shaft, and a clutch whereby thefarmgmay be engaged with the shaft for 'rotative' movement therewith. in a all rotated positions of the shafte Other objects will appearin the course of the followingdescription; a, 7

My l'llVGlltlOl'L 1s -1llustratedj1n the accom panylng drawings, where n 85 I: whereby the sawsmay be, manuallyadjusted line 99 of Figure 8;

Figure 1 is a longitudinal sectional view of a stave jointer constructed in accordance with my invention;

Figure 2 is a top, plan viewpartly in section of the construction illustrated in Figure 1' I Figure 3 is an'elevation of the jointer shown in Figure 1;

Figure 4is a section on the line 44 of Figure 1; w

-Figure 5 is a detail elevation of the shaft 29, the levers 33 and 36, and the clutch con-.

nection, the viewbeing partly in section;

'- Figure 6. is'an elevation ofthe structure shown in Figure 5; V

Figure 7 is a fragmentarysection on the line7-7 of Figure'2;

Figure 8is an elevation of part of the frame of the machine and thermecha'nism for operating the ank shaft 101;

Figure 9 is a fragmentary section on the I Figure 1-0 is a diagrammatic perspective view of the saw supporting framesand the saw table and straight edge, showing the manner in which the latter are connected up with the saw supporting frames;

' Figure 11 is a side elevation of one of the beams 19, the supporting bracket being in section. V

Referring to these drawings, it w ll be seen that my improved jointer including a supporting frame comprises the transverse members 10, the longitudinally extending members 11 which constitute the base of-the machine, the uprights 12, and the transverse braces 13. Obviously I do not wish to be limited to this particular form of base.

' Extending upward. from one of the longitudinal beams 11 at what will be termed the rear of the machine and projecting'above the upper-ends of the vertical members 12 is a post 14. Generally speaking, the framework composedof the members 10, 11, 12 and 13 supports a laterally reciprocating saw table'and two saws Mounted at the forward end of the table are two opposed mandrel supporting frames 15 and 16. Each of these mandrel supporting frames is somewhat arcuate in form and the lower end of each mandrel supporting frame is rigidly mounted upon an oscillating bar 17 pivotally supported by pins engaging brackets 17 the pivots for each of these mandrel supports being in line with each other.

The two supports 15 and 16 are practically opposed to each other and almost in the same plane,.and each mandrel support at its in ner end adjacent its pivot has an upright 18.

Mounted on these uprights and onfthe frames 15 and 16 are the bearings 19, and mounted in these hearings are the mandrels 20 and 21, each carrying at its inner end a circular saw 22. The circular saws22, it will be seen, are nor-pally at an angle to each saws may be driven.

stated.

otherand are so angularly related thatfthe plane of each saw will intersect the pivotal axis of the supports 15 and 16 under allcircumstances of operation (see Figure '4);

Each pair of bearings 19 is mounted upon a base 23 which rests upon brackets 24, and

these bearings are adjustable by means of screws 25. Each mandrel carries upon its outer end the belt pullev 26 whereby the Mounted in a bearing post 14 and in a bearing carried by'a post 28 is a rock shaft 29 having at the end remote 27 carried by the from the saw mandrels the hand lever 30 I whereby the shaft may be rocked; This rock shaft also carries upon it anarm 3l having' a counter-balancing weight 32 which tends to bring the rock shaftbacklt'o normal.

Mounted upon the rock shaft and rocking therewith is a two-armed lever 33 connected by links 34 and 35 with the supports 15 and 16 respectively. Thus it will be obvious that 7 when the rock shaft 29 is shifted ina'countor-clockwise direction, the free ends-'of'the,

end of which is angularly extended and normally engaged with the rock shaft for movement so that as the'rock shaft oscillates, the lower end of the arm 36 will shift transversely. The lower end of this arm carries upon it a roller 37 which bears against a template or cam, as will belater described. cause this roller to bearagamst the cam by The arm 36 is drawn inward to V means'of acontractile spring 38. Mounted upon theshaft 29 is an arm 39 which carries upon it what may be termed a'clutch 40 which is attached to the arm 39 in any suitable manner. One endof thisclutch 40 is angularly extended, as at 41, and pivoted to the opposite end of the clutch is an arcuatc lever 42, one end of'which carries a set screw 43, the opposite end of the lever being connected by a link 44 to a trigger lever 45 which is pivoted upon a bracket 46 projecting from the lever 30. This trip lever or trigger lever projects up above the member 40 for a purpose which will be later Mounted upon the member 36 is a curved rod or quadrant 47 whichextends between the end'of the arm 39 and the prolongation 41 of the clutch member 40.. A spring 48 bears at one end against the arm 39an'd at the other bears againstv the'lever i2 and? urgesv the upperzend of the lever outward, thusurging the screw 43 through the member39 and against-theguadrant 4'7 i Mounted: upon a shaft: 49 carried bytthe uprights 36 is a-pulley" 50 from whichypower is. transmitted; to the machine, and also mounted upon this; shaft." i9 is a pulley 51 from which the; feeding mechanism is driven. Mounted'ain suitablebea-rings 'inithe supportmgframe 1n frontj'ot' the saws 1s a feed roller 52:, and mounted in suitable bear-- ingsgupon the supporting frame on the other side of the pairiof' saws is a feed roller.v 53. These rollers aremounted upon shafts 54 and155' respectively, both of these shafts carrying pulleys 56. .The belt 51 passes down over the rearmojst pulley 56,- then up over an idler' pulley 57 which is suitably supported upon the frame, then downward and around the. inner pulley 56 andup-to the pulley 51,and so back-again.

Operatively supported 1n bearings above each of the feed rollers 52 and. are the idler rollers 58; mounted in v'erticallyslotted roller-'64 is mounted at the rearvend-ofthe machine in suitable brackets and is; of

' course, on a leyeliwith therollers' 52 and 53.

'Itwill be noted: that'the stave supports 61 intersect the saw nearthe. upper portion ot'the saw'so that just enough of the saw extends above the stave rests or supports a 61.2 to" cutzfthrough the stave: ,Pivotally mounted upon a downwardly extending bracket 65 is a tripilever 66', the rear-end. 'of' which is turned'upward in a. curve, the upper extremity of: this curved portion pro-- jecting slightly abovethe upper faces of the stave rests 61 and: being'beveled clownward and rearward, as at 67. When astave passes over the roller 52, it strikesrthe upper end of thistrip lever at' the beveledportion 67 and forces the trip lever "downward, 'raising the rear'end' thereof, Pivoted to this rear end is'the depending linkv6'8i i A- feed table 69 is-secured to :cross bars 70 and"7ljwhich have sliding movement in suitable longitudinally extending supports 72 under the upper frame member 73'. Mounted'upon the'feedtable is a guide rail 74, this guiderail'being hinged under the table by rods 7 5 (see Figure 2):. An-arm is, attachedto, this guide rail: and is? counterweighted so. aseto urge the guide rail into a position parallel to and extending upward above. the "upper face of-the? table 69.1 Operatively associated with" thelfeed Vtable isthe straiglitoedgcorga'uge-77,1which a, is carried-by twoout'wardly projecting arms 78 which extend through a rock shaft 79;!

These arms areinounted in the rock shaft so as to shlft transverselythrough the rock shaft and-are held in adjusted positions by a means. of nuts 80 engaging the arms 78*o1ieach side: of the rock shaft.

The gauge 771 is adapted to be'depr esset], into proximity tothefac'e of the plank. lying upon, the table 69 andby' its usentheoperatoris enabled toqjudge' just 110w much of the plank which is simplyrough edged, can be utilized informing the stave. This straight edge,v 7 7, as; will hereafter appear, "is ad] ustable toward or from the middle line ""ofthe n1achine, a's"is the gaugeit, and-the table. 69, and as the table 69and the gauge or v I straight edge/77 are shifted toward the middle-line'of the machinejthesawsfarealso shifted toward the "middle lin'e, and 1 when the tables 69' and the gauge 177are' shifted away from this middle line thesaws are likewise shifted and, to a corresponding deree. a V b I i i I I T1118, rock shaft 79-carr1es an; arm; 81 con- -nected by a link 82. to one arm 83 of a bell cranklever 84 mounted upon a bracket85 attached, to. the post 141., The short arm of the bell crank lever 8% is connected to .a

link"86; which in turn is pivoted to tlieupe I per endlof the hand lever453 as zit-87. Thus it will be obvious.- that when, the handlever l5is drawn inward toward the lever 30, the

upper end of: this leveri5 willibe shifted forward: will turn the bell crank 84, p lift up on the link 82, and rock the shaft- 79 so as to carry: the straight edge 77 downward against thefeed table; As soon,however, a1s the handis: released on'the lever. 45, the straight edge Will be, carried upward. s i

The rock sha-ft79i's1mormted atits ends in downwardly extending legs; 88', which at 1 their lowerends are mounted in a rock shaft 89: carried in the supports 12; Thefeed table 69 hasextending from it the horizontal rods 90 which are connected to the upper endsof arms 91, which inturn are mounted upona rock shaft 92. Mounted upon. the

membe1r17 of the right hand mandrelysupport 16 is ,anfupwardly'extending arm 93, whiclr at its upper end is connected by a linki9-fi-to one of' the arms 88. A like arm: i

extends upward from the memberYl'? of thefleft'hand mandrel support and is connected atfitsupper end by means of a. link- 96 to an arm 97, in turn connected to the rock shaft 92. Thusit willbeobvious that I the feed table69 moves laterally with the left? hand .m-andrel support; 15, while the straight edge is so connected to the. right hand mandrel support 16 that they move together. r

Mounted in guides 98 supported in any suitable manneron a longitudinally extending beam 78 (see Figure 2), is a template or reciprocating'cam 99, the outer edge face of which at one point is outwardly curved, as at 100, in conformity with the curvature given to the middle of a barrel stave. Operating against this cam is the roller-.37 carried by the arm 36 previously referred to. The cam or template is rechirocated through the guides 98 by means of a crank shaft 101 back again so thatthe roller 37 will be shifted outward to its full extent andthen shifted inward again. This intermittent ro tation of the shaft 101 is securedby a clutch mechanism, as will be now described.

' Mounted loosely upon the crank shaft 101' is a gear Wheel 104, which in turn is engaged by a pinion 105 mounted upon the shaft 54.

- This pinion 105 meshes with the gear wheel 104, and carried by this gear wheel 104 to rotate with it is a ratchet tooth-edgear wheel 106 which is also loose upon the crank shaft 101. Mounted upon the shaft 101 to rotate therewith is an arm 107, and pivotedupon the extremity ofthe arm 107 is a pawl 108,

spring 114 which is connected between the.

one end of which is provided with an inwa-rdly projecting tooth 109,'while the outer end is provided withthe outwardly projecting tooth 110 having a beveledface. Coacting with this tooth is a. latch lllwhich forms the upwardly projecting arm of a bell crank lever 112, the other end of this bell crank lever being connected by the link 68 to the trip lever 66. Thus it will be obvious that when a stave is passed between the rollers 52 and 58 and strikes theheveled end 67 of the trip lever 66 that this beveled end will be depressed, lifting upward on the rod 68, which in turn will pull upward on the arm 112 of the bell crank lever and shift the upwardly extending arm 111 out from beneath thetooth 110; As soon this has been accomplished, the

arm 10'? and the pawl 108 will pull the pawl 108 inward until the tooth 109 engages a tooth on the wheel 106, when rotation of. the pinion 105' will be transmitted to shaft 101 through the gear wheels 104 and 106, so that just as soon as a stave reaches the spot where it is about to he sawed 1t Wlll automatically start the template 99 moving and this will continue througl1 -one complete rotation of the wheel 106 and until the stave has passed the trip lever 66 and the parts are again in the position shown in Figure 9, when the tooth 110 will catch -against the latch 111.

In the operation of this mechanism, the

unjointed stave, if with onesawed edgeyis placed on the feed table 69'with thesawed edge against the guide 74. The operator then draws lever '45 against the handle 30 and thence through the link 44 releases the clutch 40. At the'same time thisbrings the straight edge 77 down on the top of'the stave. The operator then shifts the lever 30 to the right or left until the straight edge shows the limit of available timber. the grip on the lever-'30 is releasedand grip on the member 45 is also released, the spring 48 looks the rock shaft 29 to the vertical bar 36. lVhen the handle 45 is released and the spring 48 forces thelower end of the lever 42 inward, gripping the sector-shaped member 47 which is attached to the member 36, thus locking the member 86 to'the shaft 29 andlocking this arm 86 to, the arm-39 at a predetermined angle. 'At the time that the handle 45 is released,-the spring 48, through the link 44, forces the upper end of-thelever or member 45 outward. This pulls. on the link 86 and bell crank with its arms 84 and 84 lift on the link 82 and through the arm a V 81 rotates the rock shaft 79 and this, of course, causesthe raising of the straight edge 77, thus freeing the stave, which is then pushed forward into the feed rollers, and when the stave reaches the end 67 of, the trip lever 66, it presses this free end downward one direction or the other so as to shift the v saws further apart upon the stroke of the cam or pattern in one direction and then shifts the saws nearer together upon a movement of the pattern or cam in .the other direction. When the cam or template has moved a full stroke forward, one-halfof the stave has been jointedtor out and thecam has moved the verticalbar- 36 at; this lower end outward and the double crank 38hy the connecting'rods 34 and 35 have moved the saws outwardly, increasing-the width of the stave at this point, and as the rest of the stave passes the saws, the return of the cam or template allows the saws .to return tothe first position, which makes this'half of the V stave anexact duplicate ofithe-ifirst half,

byreason of the fact that I secure increased that is'the two ends have the same width with slightly curved sides,,iwith the maximum width in the center of the same. [Just as the stave passes. out of the saws, the cam or pattern reaches its first position and the latch'lll forces the pawl 108 out of engage ment with the ratchet wheel, thus stopping the action of :the cam or template;

the action'of the crank shaft and stopping My machine is particularly advantageous over the machine shown in my prior patent capacity, that there are fewer parts to the machine itself, and the machine is much more simple. 7 Furthermore, itentirely eliminates waste of vimaterialc slab wide enough for two staves or one With two roughv edges is placed on top of the guide rail 7% which tlrQPs to the level --of the feed table and returns to place 'Wl1eI1-' the stave leaves the table. The cam or. template99" imparts the same movement to "the, rock shaft 29 for saws, making a lessabilge in the relatively narrow stave, The arrangement s such as to give to each stave its proport onof the total bulge'of the cask sothat the completed cask isuniform whether wide [or narrow staves are used. y y

I It will he noted that the double crank 33 and shaft 29 are adjustable with reference to the saw controllinglarm 36 by means of the lever 30 and that the straight edge or guide 77 is connectedithrough arml93, link 94mm arm 88 withpne of the oscillating bars 17'. which support a saw mandrel. Thus the rotation of shaft 29 by means of handle v 30 shifts the saws nearer to or further from each other and the shifting of the saws sets 'the straight edge 77 and-theyguide 74 (because this guide is mounted on thelaterally shifting'table 69) nearer to or further from each other. Thus if the handle 30is moved the saws are shifted and the tablewith guide.

74: and the straight edge are moved so that the operator can, by noting the position of thestraight edge on the'staveplanhset the sawsfto exactly the right position for any widthof stave width of plank or any desired 'to be made from a plank. I

Itis also to be noted that in .this construction single reciprocating cam or template may operate on all widths ofstaves by reason of the fact that in wider staves "the movement of the saws to cause the form ation of 'th'ebilge :is greater thaniin narrow- 1 erstayesi'and rthe angle ofthersaws isjwider' for widerstaves than itlis for iiiarrower 'staves; inasmuch :as the :shaft 29 z'aiid the double crank 33 :are rotatable independently Owners-m 36,i-t follows that When themar rower "stave's are to be :made the :a-rms 33 mine up and down or more nearly venticat'l and as a consequence have greater amplitude of movement in :a horizontal plane to shift the saws, but when the doub le crank is tanned more nearly into :a 'horizontal'iplane; the

action :of the cam or template will-give the same oscillation to thisidouble crankand" this oscillation will :be more nearly vertical and as :a consequence :the lateral movement of the em will be'l'ess. .Theasta ves-are out out tof' lo gs slabs, the 'first'three or four of which have two hark edges. hesl'og isth'enturnedWith a the sawedportion downwartl resting bnithef head blocks Thus-alhslahs: cutf-nonrthef rest of this log winhaveene' szmm d;:ec'lgehnt- Willhave neither bevel nor rbiilge'. -llhe1fin-- ished stavemust have both the hovel-and the bulge on each edge'of equal .for1n"orrcharaev I te-r; Thus it is necessary to joint-both edges oieach stave. The 5 osit-ion of the feed table is so nicely adjustec that the lefthand saw "can remove only enough of the stave to .if'o'rm the bilge,"

a an a 'dlnazry sawmill "and areljout iirnto ih'allf inch that is the saw only touches the stave tat the middle of itslength, hut the action of the template, the.;sawmoves inward and removes I-slightlymore andem-ore wood it moves'toward each end; The straight edgeisso accurately connected to the righthand saw mandrel support that even *a pencil mark drawn on top of the. stavealongthe face of the straight edge will be removed by the; :right hand saw, and: as; the joperatoir' shifts the saws he imparts simultaneous action to the table -69 and to thetstraightiedge 77 so that the straightiedge' covers' only that portion ofthe stave which must heremoved; Thus no imber is wasted and great capacity of the machine issecured;

Iolanns: a

- 1. .A stave j-ointer including two saws disposed in plane's-at alltiines radial to acornmon center, manually operable means for adjusting the saws toward xor. from each other poweroperatedjmeans for automatically shifting the-saws with relation to each other including a reciprocating oam, ad-63.111

opera-ting power, driyenv element, and :i'neans' acting to automatically connectl'the' cam to the power drivene'lement whenthe'rstave is about to engage the saws and automatically.

disconnect theioamfromthe power driven element when thestave has passed the saws.

QQA stave fjo-inting machine including opposed saw mandrel supports each pivoted one end upon axis common to both thezsupports,saw mandrels carried upon the supports and carrying saws, the saws being disposed in planes radial to the common axis of rotation of the supports, manually operable means Connected to the supports for adjusting the supports towardor from each other, singlemeans for automatically increasing .or decreasing the distance between the saws including a template, and a single member operatively' engaged: with both supports and permitting the independent adjustment of the supports toward or from each other, said member being engaged by said template and acting to automatically shift the sawsrtoward or from each other. 7 i 3. A stavejointing machine including opposed saw mandrel supports, each pivoted at one end upon :a pivotal axis common to both. of the supports, saw mandrels carried thereby and having saws at their confronting ends, the saws being disposed in planes radial to thecommon axis of osclllation for the supports, amanually oscillatable rock shaft, a double-armed lever mounted upon the rock shaft,:links .connecting each arm of the; lever to one of said. supports whereby upon an oscillation of the rock shaft the supports will be shifted toward or from each other, a power operated'cam, an arm loosely mounted upon the rock shaft and engaging said cam, and means for :rigidly engaging the armwith the rock shaft, said means being manually releasable. v

4:. vA stave jointing machine including opposed saw mandrel supports, each pivoted at its lower end upon a common axis of oscil-' lation, saw mandrels carried thereby, the

* confronting ends'of the saw mandrels carrymg circular saws, the saws being disposed 111-- planes radlal to the common axis of rotation, a rock shaft, a double-armed leveron the rock-shaft, links 'connectingthe extremities of the arms with the respective mandrel supports, a'lever on the rock shaft whereby it may be manually shifted'to'adjust the supports toward or from each other, a power operated cam, an arm loosely mounted upon the rock shaft and operatively engagedby .said cam, and means whereby said armlmay 50;

be connected to the rock shaft to oscillate the same or disconnected therefrom.

5. A stave jointing machine including op-, posed saw mandrel supports, each pivoted at its lower end upon a common axis of oscillation, saw mandrels" carried thereby, the

confronting ends of the saw mandrels carry ing circular saws, the saws being disposed in planes radial-to the common axis of rotation,=a'rock' shaft, a double-armed lever on" the rock shaft-,links connecting the extre'inities of the arms with thje'respective mandrel supports, a'lever onthe rock shaft whereby it may be manually shifted to adjust the supports toward or from each other, a power operated cam, an arm loosely mounted upon said hand grip.

the roclrsliaft and operatively engaged by said cam, means whereby said arm maybe connected to the rock shaft to-oscillate the same or disconnected therefrom including a hand grip mounted upon saidoperating lever, and a clutch for operatively engaging the rock shaft to the arm and operated from 6. A stave jointing machine includingopposed saw' mandrel supports pivotally mounted upon a common axis of oscillation, saw 'man'drels carried thereby, saws carried on the inandrels and disposed in planes ra dial to the common center of oscillation, means for automatically shifting the sup ports toward or from eachother including alongitudinally reciprocatable template op V eratively engaged with the saw supports, a constantly operating power driven element associated with the template, and meansacting automatically upon the approach of a staveto the saws to operatively connect the element to said template and upon 'the re cession of the stave; from the saws to release the element and the the engagement between template. V V 7.1%. stave jointing machine includingopposed saw mandrel 7 supports pivotally mounted upon a common axis of oscillation,

the saws to release the engagement between the element and the cam includlng a shaft operatively connected tothe cam, a ratchet wheel loos'e on the shaft, a pawl carried by the shaft and normally out of engagement with the ratchet wheel but urgedv into on gagement therewith, and a trip disposed in the path of movement of the stave and having one end disposed slightly in advance of the saws and adapted to be'engaged by the stave as itne-ars the saws, and a latch, normally engaging the pawl and holding 1t,

from engagement with the ratchet wheel,

saidtrip when engaged bythe stave operating to release said latch. I v v V -8. A stave olntlng machine includingopposed saw mandrel'supports, each mounted for movementtoward or from each other, saw mandrels carried thereby ai id'having saws at'their confronting ends, amanually oscillatable rock shaft, a double armed lever mountedupon the rock shaft, links connecting each arm of the lever to one of said sup ports whereby upon an OSClllatlDll' of the essence fro-ch shaft the supports will be shifted: toward or from each otheig'a single power operated earn, an arm loosely mounted.=upon the rock shaft and engaging said cam,',and means for rigidly engaging the-arm. with the rock shaft in any adjusted position of the'iroe'k shaft within range of its oscillatiomsaid means being manually releasable. I

9'. In a sawing machine, two saw supports pivoted on a common axial line, saws; carried on the supports, means'for shifting the saws toward and from each otheri including a. *shaft, a two armed crank mountedon the ing operatively connected: to oneof the saw" shaft, the arms being disposed! in diametrically opposite ositions and each. arm he:

supports, manually operable meansfo-r oscillating said shaft, and automatic operatrneans for osefllating the shaft to cause a predetermined lateral movement of the saws, the shaft being rotatively adjustable by said manual means independently of the automatically operated means. 7

10. In a sawing machine, two saw supports pivoted on a common axialline, saws carried on the supports and disposed in planes at'all times radial to said axial line, means for shifting the saws toward and from each other including a shaft, a two armed crank mounted on the shaft and having its arms disposed in diametrical relation and each arm being operatively connected to one of the saws supports, manually operable'means for oscillating said shaft, a cam for automatically oscillating the shaft to cause a predetermined oscillation of the shaft and movement of the saws, and means for operatively connecting said cam-to the shaft in any adjustment of the shaft.

11. In a sawing machine, two saw sup-. ports pivoted on a commonaxial line, saws shaft and movement of the saws, means for operatively connecting said cam to the shaft in any adjustment of the shaft including a cam operated arm loose on the shaft, and means whereby the arm may be clutched to the shaft in any rotatively adjusted position of the shaft. t I a '12. A stave jointer including two saws disposed in planes at all times radial to a" common axis, a feed table disposed in advance of the saws and shift-able laterally, a

straight edge movable vertically toward or from-the feed table and laterally with relation theretofmairs operatively connecting the feedatable with: one of said sawsupportsfl and operatively connecting the straight edge, with. the: other of: said saw? supports wherebythe saw supports and the feed tabal'e andi straight edge shall be shifted coincident'ly,'-

including means for shifting the straight edge: vertically toward o 'r from the feedtable; I

' 13.. A stave. jointingmachine i-nciludin'g opposed cenzterg; saw mandtzels'earried thereby and 751 saw mandrel. supports pivotally mounted. at their lower ends upon a common carryingrsaws, the saws: being'disposedin planes radial? to the common center, a laterallly shiiftable feed. table carrying" a guide,

a laterally shiftable straight edge=coacting therewith, manually operable means for: simultaneously shifting-both of said supports toward or from each O'iLllBlQJTlGMlS operatively'connecting'the straight edge and the feed table to said manually operable means to secure the movement in opposite directions of the feed table and straight edge ooincidently with the movementof the saw m andrels, and manually operable meansfor raising or lowering the straight edge out of or into operative relation. to the feed table. 1 I I 14. A stave jointing machine including opposedsaw' mandrel supports pivoted at their lower ends upon a common center, mandrels carried on the supports, the con-' fronting ends of the mandrels having saws disposed in planes radial to the common center of oscillation, a laterally shiftable feed table, a straight edge coacting therewith-and I l I laterally shiftable and vertically movable, a

rock shaft operatively engaged with the mandrel supports to 'coinoidently shift them toward or from each other as the rock shaft a lever whereby the shaft may be oscillated, means operatively connecting the feed table to one of said saw supports and the straight edgeto the other ofithesaw supports whereby the feed table. and straight edge shall 'mo've coincidently with the mandrel supports, and means mounted upon said lever whereby thestraight edge may be raised or lowered.

15. A stave jointing;machine-including oppose-d saw mandrel supports pivoted at their lower ends upon a common center, mandrelsi carried on the supports, the confronting ends of the'mandrelshaving saws disposed inplanes, radial to the common ;is oscillated in one or the other direction,

center of oscillation, a laterally shiftable' feed table, a straight edge coacting therewith and laterally shiftable and vertically,

movable, a rockfshaft operatively engaged with the mandrel. supports to coincidently direction, a lever whereby the shaft may be shift them toward or from each other as the rock shaft is oscillated in one or the other oscillated, means'operatively connecting the feed table to one of said saw supports and the straight edge to the other of the saw supports whereby the feed table and straight edge shall move coincidently with the mandrel supports, cam driving means therefor, means acting to automatically connect the cam with the driving means as a stave ape proaches the saws and automatically disconnect the cam' from the driving means when the stave recedes from the' saws, a member operated by the cam, means whereby the rock shaft may be clutched to said cam operated member, said means permitting the rock shaft to be manually adjusted, and

, manually'operable means mounted upon said lever for releasing the clutch and simultaneously lowering the straight edge onto the feed table or engaging the clutch and simul taneously lifting the straight edge from the feed table.

16. In a stave jointing machine, opposed messes saw mandrel supports pivotally mounted 'at 1' their lower ends on a common center, mandrels carried thereby and carrying circular saws'at: their confronting ends, thesaws'be ing disposed in planes at all times radialto tion where the lever is horizontal, a power operated cam adapted to automatically shift the rock shaft, and manually operable means' for shifting the rock shaft-independently of thecam.

In testlmony whereof I hereunto affix my signature. I

WALTER s. MINOR. 

